Because Earth does not get significant inputs of matter from space, its essentially fixed supply of nutrients must continually be recycled to support life.

O False

O True

Neurotransmitters are messengers responsible for communication between neurons. they are released from synaptic vesicles and are received by receptors.  the communication is referred to as neurotransmission. the following statement is true about neurotransmitters: a. they're stored in synaptic vesicles in the axon.

Your answer will be b action plan.